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EMD "F7" Locomotives: Cab, Top Speed, Specs, Rosters

Last revised: October 19, 2026

By: Adam Burns

Electro-Motive built the F7 from February 1949 through December 1953. It was a 1,500-horsepower B-B cab unit on Blomberg trucks, with a 16-cylinder 567B engine, a D12B main generator, and four D27C traction motors. The rating matched the F3. The electrical gear was the update. Field guides count 2,366 cab units and 1,483 boosters from Electro-Motive, 3,849 locomotives. The FT, the F2, and the F3 together came to 3,007. General Motors Diesel added 80 cab units and 47 boosters at London, Ontario.

For the early 1950s the F7 was what the SD40-2 became twenty years later: one model a railroad could buy by the hundred and assign to almost any train. Southern Pacific took the largest fleet. Santa Fe, the Baltimore & Ohio, the Pennsylvania, and the New York Central each rostered them in quantity. Hundreds were still in freight service in the 1970s. Short lines and industrial owners kept examples at work into the 1980s and 1990s. Many are preserved, and several still run.

Electro-Motive F7 demonstrator No. 1950 at La Grange, Illinois, in June 1950

Electro-Motive’s F7 demonstrator set No. 1950 outside the plant at La Grange, Illinois, in June 1950. Warren Calloway collection.

On this page: At a glance · From the F3 · Gear ratios and speed · On the railroad · London and Mexico · Specifications · Later years · Production roster

At a glance

ItemDetail
BuilderElectro-Motive Division, General Motors, La Grange, Illinois. General Motors Diesel built the Canadian National, Canadian Pacific, and Wabash orders at London, Ontario
ModelsF7A, the cab unit, 50 feet 8 inches. F7B, the booster, 50 feet 0 inches
BuiltFebruary 1949 through December 1953
EngineEMD 16-567B. Bore 8 1/2 inches, stroke 10 inches. 1,500 horsepower at 800 rpm. Idle 275 rpm
Guide total2,366 cab units and 1,483 boosters from Electro-Motive. London added 80 cab units and 47 boosters
TrucksB-B, Blomberg, 9-foot wheelbase, 40-inch wheels, four D27C motors
Standard gear62:15. 65 mph. 40,000 pounds continuous at 11 mph
First ordersRio Grande sets 555, 556, and 557, order E956, February 1949
WorkFreight first. Passenger trains where the grades favored four traction motors. Later, short lines, industrial jobs, and preservation

From the F3

The F7 followed the F3 in the catalog and kept the same prime mover. A 567B is a two-stroke V-16 with a Roots blower, 567 cubic inches to the cylinder. Electro-Motive had already been putting a newer generator and traction motor under late F3 carbodies. Those locomotives were still sold as F3s. Railfans later grouped some of them under the name F5, and sorted both models into phases by grilles, louvers, and the dynamic-brake fan. The F7 carried the updated equipment as the D12B main generator and the D27C motor, with a D14 alternator and a Delco A8102 auxiliary generator.

The continuous rating moved with the electrical gear. In 62:15 freight gearing an F7 was rated at 40,000 pounds, where an F3 in that gear had been rated at 32,500 pounds. The rest of the locomotive was the covered wagon railroads already knew: a bulldog nose on the cab unit, a cabless booster of the same machinery, multiple-unit connections, and dynamic brakes when the railroad ordered them. A Gardner-Denver WBO compressor and Westinghouse 24RL brakes were the standard air equipment. Fuel was 1,200 gallons. A fully loaded unit weighed about 230,000 pounds in the 1950 operating manual. Published sheets list the cab at 230,000 pounds and the booster at 228,000.

Steam heat was optional. A cab unit could be fitted with a Vapor-Clarkson OK-4625, rated at 2,750 pounds of steam an hour. A booster could be fitted with an OK-4616, rated at 1,700 pounds an hour. The F7 manual gives the water tanks that went with that equipment: 500 gallons in the cab unit’s vertical tank and 600 in the hatch tank, 1,200 gallons in the booster’s vertical tank and 600 in its hatch tank. The passenger model with a longer carbody and more water was the FP7, built through the same years and counted separately.

Santa Fe F7A No. 345-L in the Yellowbonnet livery at Ardmore, Oklahoma, on March 22, 1974

Santa Fe F7A No. 345-L in the Yellowbonnet livery at Ardmore, Oklahoma, on March 22, 1974. American-Rails.com collection.

Gear ratios and speed

Electro-Motive offered eight gear ratios, cut as axle-gear teeth to pinion teeth, all on 40-inch wheels. The freight ratio railroads usually took was 62:15, good for 65 miles an hour, with a continuous rating of 40,000 pounds at 11 miles an hour. The lowest ratio, 65:12, held the locomotive to 55 miles an hour and raised the continuous rating to 52,400 pounds at 9 miles an hour. The highest, 56:21, was the passenger gear, 102 miles an hour, and the continuous rating fell to 25,500 pounds at 18 miles an hour. The figures below are the maximum permissible speeds from the March 1950 F7 operating manual and the continuous ratings from Electro-Motive’s F7 short-time table. Each continuous figure applies at the speed in that row, which is also the full-throttle minimum in the operating manual.

Gear ratioMaximum speedContinuous tractive effortAt
65:1255 mph52,400 lb9 mph
62:1565 mph40,000 lb11 mph
61:1671 mph37,000 lb12 mph
60:1777 mph34,000 lb13.5 mph
59:1883 mph32,000 lb15 mph
58:1989 mph29,500 lb15.5 mph
57:2095 mph27,500 lb17 mph
56:21102 mph25,500 lb18 mph

On the railroad

The first F7s were three Rio Grande A-B-B-A sets, 555, 556, and 557, order E956, finished in February 1949. The six cab units are serials 5862 through 5867. The six boosters are serials 5868 through 5873. The Nashville, Chattanooga & St. Louis was close behind: cab units 809 through 815 and boosters 912 and 913, order E1074, in April 1949. From there the orders run out to December 1953. Alaska Railroad 1506 and 1508, and booster 1507, are among the last, serials 19045 through 19047.

Rio Grande F7A No. 5754 at Denver, Colorado

Rio Grande F7A No. 5754 at Denver, Colorado. Date not recorded. American-Rails.com collection.

Freight was the assignment Electro-Motive had in mind, and it is where most of the fleet worked. Santa Fe also put F3s and F7s on the Super Chief and the El Capitan over the western grades, where four traction motors were the railroad’s choice for those trains. Southern Pacific used F units the same way on its own passenger trains. The Great Northern assigned F7s to passenger schedules as well. A steam generator, and one of the higher gear ratios, fitted the freight carbody to that work.

Colorado and Southern F7s led by No. 702-D on a southbound freight north of Palmer Lake, Colorado, circa 1960

Colorado & Southern (Burlington) F7s, led by No. 702-D, on a southbound freight north of Palmer Lake, Colorado, circa 1960. American-Rails.com collection.

Electro-Motive also kept a demonstrator set on the road. In August 1952 it built a four-unit F7, numbered 459A through 459D, for trials on the Chicago & North Western and the Norfolk & Western. Union Pacific agreed on August 22, 1952, to buy the set. After the Norfolk & Western tests, Electro-Motive reconditioned the locomotives and delivered them in October 1952 as Union Pacific 1481, 1496B, 1496C, and 1482. The builder plates read August 1952. Don Strack, writing in Diesel Era for November/December 1991, gives the base price as $161,000 for the two cab units and $147,500 for the two boosters. While they still carried the 459 numbers they had the F3 style of dynamic-brake hatch. After the reconditioning they carried the F7’s 36-inch roof fan.

An A-B-A set of Southern Pacific F7s with Extra 6360 in the Bay Area of California in the 1950s

An A-B-A set of Southern Pacific F7s with Extra 6360, on what appears to be a reverse move in the Bay Area of California in the 1950s. American-Rails.com collection.

London and Mexico

The F7 was the first cab unit General Motors Diesel built at London. The London list runs to 127 locomotives: 58 cab units and 18 boosters for Canadian National, 29 boosters for Canadian Pacific, and 22 cab units for the Wabash. The Wabash engines, the first of them finished in December 1950, worked the railroad’s line in southern Ontario between Detroit and Niagara Falls and Buffalo. Their serials use London’s A-prefix. They are a separate production from the La Grange serials.

Electro-Motive also built F7s at La Grange for Mexico. Two cab units, 23037 and 23038, went to the Secretaría de Comunicaciones y Obras Públicas in September 1949. The Ferrocarriles Nacionales de México took the rest of that export list, 22 cab units and 16 boosters, in 1949 and 1951. Those orders are tabulated after the London roster.

After the covered wagon

The F9 that followed the F7 sold in much smaller numbers. Railroads were buying Electro-Motive’s GP and SD road-switchers, and through the 1960s the six-motor freight locomotive became the usual new power. The F7s already on the roster stayed. They ran out their miles in freight consists, then in local and work-train service, and then, for some of them, on short lines.

Santa Fe F7A No. 335 leading a weed-spraying train near Eagle Lake, Texas, in June 1976

Santa Fe F7A No. 335 at the end of its career, leading a weed-spraying train across a grade crossing on the Sealy–Matagorda Cane Belt branch near Eagle Lake, Texas, in June 1976. Gary Morris photo.

Rock Island F7A No. 675 with a commuter train at Englewood Union Station on April 21, 1965

Rock Island F7A No. 675 with a commuter train of gallery cars at Englewood Union Station on April 21, 1965. Marty Bernard photo.

Chicago and North Western F7A No. 4094C at Waukegan, Illinois, on April 15, 1962

Chicago & North Western F7A No. 4094C, still in the railroad’s original diesel livery, working the yard at Waukegan, Illinois, on April 15, 1962. Marty Bernard photo.

Specifications

ItemF7A cabF7B booster
BuilderElectro-Motive Division, General Motors, La Grange. General Motors Diesel, London, for the Canadian National, Canadian Pacific, and Wabash ordersSame
BuiltFebruary 1949–December 1953Same
EngineEMD 16-567B. Bore 8 1/2 in, stroke 10 in. 800 rpm, idle 275 rpmSame
Horsepower1,5001,500
Main generatorEMD D12BSame
AlternatorD14Same
Auxiliary generatorDelco A8102Same
Traction motorsFour EMD D27CSame
TrucksBlomberg B, 9 ft 0 in wheelbase, 40-inch wheels. Truck centers 30 ft 0 inSame
Length50 ft 8 in50 ft 0 in
Height15 ft 0 in over the cabThe booster has no cab
Width10 ft 7 inSame over the hood
WeightAbout 230,000 lb fully loadedAbout 230,000 lb in the 1950 manual. Published sheets list 228,000 lb
Fuel1,200 gallons1,200 gallons
Lubricating oil200 gallons200 gallons
Cooling water230 gallons at the G valve215 gallons at the G valve
Sand16 cubic feet16 cubic feet
Air brakesWestinghouse 24RL. Gardner-Denver WBO compressorSame
Gear ratios65:12, 62:15, 61:16, 60:17, 59:18, 58:19, 57:20, 56:21. See the table aboveSame
Multiple unitYesYes
Dynamic brakesOfferedOffered
Steam generatorOptional Vapor-Clarkson OK-4625, 2,750 lb of steam an hourOptional Vapor-Clarkson OK-4616, 1,700 lb of steam an hour

Production roster

Louis A. Marre, in Diesel Locomotives: The First 50 Years, and Jerry A. Pinkepank, in the Diesel Spotter’s Guide, count 2,366 cab units and 1,483 boosters built by Electro-Motive. The as-built La Grange orders in the two tables below account for 2,253 cab units and 1,425 boosters. Rebuilds follow those tables and are a later pass through older carbodies, FT and F3 as well as F7. The Mexican deliveries, 24 cab units and 16 boosters, are at the end. London’s 80 cab units and 47 boosters have their own serial series.

Each row is one builder-order batch. Serial and order stay in their own columns. A span such as 4967–4970 is every number in that batch. Where a span says evens or odds, only those numbers were built. Baltimore & Ohio boosters carry an X after the number. Completion dates are the month the batch was finished.

F7A, La Grange

OwnerRoad numberSerialOrderCompleted
Delaware, Lackawanna & Western631A, 631C, 611A, 611C4967-4970E8527/1949
Nashville, Chattanooga & St. Louis809-8155793-5799E10744/1949
Denver & Rio Grande Western555 (1st and 4th units in A-B-B-A set)5862-5863E9562/1949
Denver & Rio Grande Western556 (1st and 4th units in A-B-B-A set)5864-5865E9562/1949
Denver & Rio Grande Western557 (1st and 4th units in A-B-B-A set)5866-5867E9562/1949
St. Louis-San Francisco Railway (Frisco)5018-50256042-6049E9703/1949
Rock Island100, 110, 101, 111, 102, 112, 103, 113, 104, 114, 105, 115, 106, 116, 107, 117, 108, 118, 109, 1196094-6113E9725/1949
Rock Island675-6776139-6141E11983/1949
New York Central1636-16466229-6239E9865/1949
Milwaukee Road84A, 84D–85A, 85D6323-6326E9975/1949
Chicago & North Western4067A, 4067C–4071A, 4071C6598-6607E10133/1949
Southern4207-42206771-6784E10275/1949
Southern Pacific6140A, 6140D–6142A, 6142D6943-6948E10366/1949
Southern Pacific6143A, 6143D–6159A, 6159D6949-6982E13106/1949
Chicago Great Western153-1567058-7061E10396/1949
Southern Pacific6160A, 6160D–6169A, 6169D7106-7125E13108/1949, 10/1949
Northern Pacific6507A, 6507C, 6508A, 6508C, 6501C, 6502C7146-7151E10404/1949–5/1949
New York Central1647-16627153-7168E10417/1949
Southern Pacific6240-62797214-7253E104412/1949–1/1950
Missouri-Kansas-Texas (Katy)208A, 208C–211A, 211C7377-7384E10506/1949
Missouri-Kansas-Texas (Katy)226A, 226C–229A, 229C7389-7396E10516/1949
Soo Line2201A, 2201C–2203A, 2203C7405-7410E10535/1949–6/1949
Delaware, Lackawanna & Western636A, 632A–635A7444-7448E10597/1949
Baltimore & Ohio180, 180A–192, 192A (evens)7554-7567E10798/1949–10/1949
Pennsylvania9690A-9699A7580-7589E10804/1949
Wabash1104, 1104A7607-7608E10853/1949
Wabash1100, 1100A–1102, 1102A7609-7614E10858/1949
Wabash1103, 1103A7619-7620E10858/1949
Wabash1105, 1105A–1107, 1107A7622-7627E10858/1949
Gulf, Mobile & Ohio811B, 812A, 812B, 813A7633-7636E10899/1949
Santa Fe202, 202C–211, 211C7746-7765E10956/1949–9/1949
St. Louis-San Francisco Railway (Frisco)5026-50337818-7825E9703/1949–4/1949
Kansas City Southern70A, 70C–71A, 71C7873-7876E111610/1949
Milwaukee Road86A, 87A/87C-89A/C7944-7950E112610/1949–11/1949
Missouri Pacific (International-Great Northern)599-6067964-7971E11279/1949
Missouri Pacific579-5947972-7987E11289/1949–10/1949
Missouri Pacific577-5787996-7997E11419/1949
Missouri Pacific (St. Louis, Brownsville & Mexico)607-6108002-8005E112910/1949
Missouri Pacific (St. Louis, Brownsville & Mexico)611-6148006-8009E131510/1949
Missouri Pacific (International-Great Northern)595, 597, 596, 5988010-8013E11309/1949
New York Central1663-16768137-8150E113711/1949
Pennsylvania9667A-9676A8227-8236E11443/1949–7/1949
Minneapolis & St. Louis150A, 150C, 250A, 250C8255-8258E114511/1949
Santa Fe212, 212C–216, 216C8281-8290E115211/1949
Santa Fe37, 37C–41, 41C8301-8310E12169/1949
Denver & Rio Grande Western558–564 (1st and 4th units in A-B-B-A set)8345-8358E11575/1949, 7/1949
Milwaukee Road74A, 74C–79A, 79C8389-8400E115812/1949–1/1950
Kansas, Oklahoma & Gulf751-7548404-8407E11594/1949
Texas & Pacific (Missouri Pacific)1500-15038428-8431E11682/1949
Texas & Pacific (Missouri Pacific)1504-15078432-8435E11686/1949
Texas & Pacific (Missouri Pacific)1508-15118436-8439E116811/1949
Texas & Pacific (Missouri Pacific)1512-15198452-8459E116911/1949
Boston & Maine4266-42678476-8477E11733/1949
Boston & Maine42658478E11743/1949
Great Northern444A, 444D, 446A, 446D8511-8514E118010/1949
Chicago & North Western4072A, 4072C–4073A, 4073C8548-8551E11887/1949
Chicago & North Western4074A, 4074C–4086A, 4086C8552-8577E118810/1949, 12/1949
Chicago & North Western (Chicago, St Paul, Minneapolis & Omaha)6500A, 6500C–6502A, 6502C8578-8583E118812/1949
Kansas City Southern (Louisiana & Arkansas)32A8600E11902/1949
Kansas City Southern (Louisiana & Arkansas)33A8602E11912/1949
Missouri Pacific (International-Great Northern)617-6188645-864630004/1950
Missouri Pacific (St. Louis, Brownsville & Mexico)615-6168647-864830524/1950
Santa Fe300-3058712-8717E121210/1949
Northern Pacific6500C, 6509A/6509C-6512A/6512C8731-8739E12149/1949
St. Louis Southwestern Railway (Cotton Belt)925-937 (odds)8755-876130012/1950
Pennsylvania9640A-9647A, 9664A-9665A8767-8776E12212/1950–3/1950
Pennsylvania9656A-9661A8791-879630373/1950
Pennsylvania9652A-9655A8800-880330382/1950
Santa Fe217, 217C–226, 226C8920-8939E123412/1949
Western Pacific913A, 913D–921A, 921D8962-897930061/1950
Wabash1165/1165A–1172/1172A, 11739020-903630086/1951–7/1951
Wabash1140/1140A–1146/1146A, 1108, 1108A, 1147/1147A–1152/1152A9047-907430096/1950–7/1950
New York Central1677-16969101-912030124/1951–5/1951
Kansas City Southern (Louisiana & Arkansas)74D, 75A, 75D9164-916630132/1951
Atlantic Coast Line348-3719191-921430143/1950
Minneapolis & St. Louis350A, 350C9225-9226E114511/1949
Southern Pacific6280-62959237-925230152/1950
Texas-Mexican800A, 800B9415-9416E12665/1949
Lehigh Valley560-566 (evens)9434-943760092/1950
Southern4221-42459481-9505E12715/1949–6/1949
Great Northern448A, 448D–456A, 456D (evens)9538-954730173/1950
Great Northern268A-270A9563-956530196/1950
Santa Fe227, 227C–241, 241C9577-960630203/1950–5/1950
Santa Fe306-3129607-961361145/1950
Chicago, Burlington & Quincy163A-166A9692-969530215/1950
Chicago, Burlington & Quincy167A, 167C–169A, 169C9696-970130585/1950
Chesapeake & Ohio7000-70159728-974360009/1950
Louisville & Nashville800-8149757-977130234/1950–5/1950
Reading266-2839802-981930245/1950
Pennsylvania9648A-9651A, 9662A-9663A, 9666A9826-983230252/1950
Nashville, Chattanooga & St. Louis816-8209877-988130286/1950
Electro-Motive (Demonstrator)930 (became Boston & Maine No. 4268)9932605910/1949
New York Central1697-17109995-1000830125/1951–6/1951
Electro-Motive (Demonstrators)801-802 (became Great Northern No. 272A, No. 272B)10081-10082E13144/1949
Erie711A, 711D10112-1011360061/1950
Chicago & North Western4087A, 4087C10150-10151E118812/1949
Richmond, Fredericksburg & Potomac1101-110810152-10159601211/1949
Richmond, Fredericksburg & Potomac1109-111010168-1016960162/1950
Atlantic Coast Line372-38310193-1020430143/1950–4/1950
Baltimore & Ohio231-237, 239/239A-243/243A (odds)10221-1023030348/1950
Milwaukee Road69A, 69C–73A, 73C10311-1032030357/1950
Milwaukee Road68A, 68C10321-1032230537/1950
Milwaukee Road48A/48C-50A/50C, 106A-108A10347-10355303612/1950–1/1951
St. Louis-San Francisco Railway (Frisco)5034-503910539-1054460305/1950
Chicago & North Western (Chicago, St Paul, Minneapolis & Omaha)6503A, 6503C–6505A, 6505C10558-1056360354/1950
Chicago & North Western4088A, 4088C–4102A, 4102C10564-1059360354/1950
Southern Pacific6296-633910601-10644303910/1950–12/1950
Western Pacific922A, 922D–924A, 924D10803-1080830406/1951
Northern Pacific6513A, 6513C10855-1085660452/1950
Northern Pacific6007A, 6007D–6012A, 6012D10908-1091960532/1950
Great Northern273A, 273B–274A, 274B11063-11066304210/1950
Great Northern275A, 275B11071-11072304310/1950
Great Northern364A, 364C–365A, 365C11073-11076304410/1950
Great Northern307A, 307C–309A, 309C11079-11084304510/1950
Western Maryland53-6011100-1110760713/1950
Louisville & Nashville8151125130235/1950
Louisville & Nashville815-83311251-1126930616/1950–8/1950
Wabash1153, 1153A11293-1129430097/1950
Colorado & Southern700A, 700D–702A, 702D11317-1132230498/1950
Fort Worth & Denver City750A, 750D–752A, 752D11329-1133461268/1950
Denver & Rio Grande Western5651, 5654, 5661, 5664, 5671, 5674, 5681, 5684, 5691, 569411405-1141460936/1950
Southern (Cincinnati, New Orleans & Texas Pacific)6114-612011517-1152360984/1950
Texas & Pacific (Missouri Pacific)1520-153611559-1157561037/1950
St. Louis Southwestern Railway (Cotton Belt)9391162630554/1950
Baltimore & Ohio245, 245A, 247, 247A11705-1170830348/1950
Milwaukee Road109A, 109C–111A, 111C11800-11805303612/1950–1/1951
Bessemer & Lake Erie701A-707A11809-1181561186/1950
Chesapeake & Ohio7016-703111842-1185760009/1950
Atlantic Coast Line384-38811909-11913612210/1950
Nashville, Chattanooga & St. Louis821-82511952-1195630286/1950
Louisville & Nashville834-84611969-11981306010/1950
Minneapolis & St. Louis151A, 151C12027-12028306212/1950
Texas & Pacific (Missouri Pacific)1537-155712029-1204930633/1951–4/1951
Baltimore & Ohio249, 249A–263, 263A (odds)12259-1227430649/1950–10/1950
Wabash1154, 1154A12305-1230630097/1950
Soo Line (Wisconsin Central)2224A, 22724B–2225A, 2225B12314-1231761417/1950
Kansas City Southern59D, 72A/72D–73A/73D, 74A12318-1232361428/1950–9/1950
Electro-Motive (Demonstrators)1950A-1950B (became Louisville & Nashville Nos. 857-858 in 11/1950)12334-1233562176/1950
Southern (Alabama Great Southern)6714-671912351-12356614511/1950
Louisville & Nashville847-84812384-12385306011/1950
Atlantic Coast Line389-39112392-12394612210/1950
Electro-Motive (Demonstrator)5040 (became Union Pacific No. 1483 in 12/1952)1246664997/1950
Lehigh Valley568-574 (evens)12483-1248630651/1951
Missouri Pacific619-62212521-1252430673/1951
Missouri Pacific623-62612527-1253062723/1951
Wabash1173A, 1174/1174A–1176/1176A12612-1261830087/1951
Baltimore & Ohio265/265A–279/279A (odds)12626-12641616110/1950–12/1950
Baltimore & Ohio281/281A–297/297A (odds), 361, 361A12642-1266162071/1951–2/1951
Baltimore & Ohio363, 363A, 365, 365A, 367-37412662-12673616112/1950–1/1951
Southern Pacific6340-636712745-1277230718/1951
Southern Pacific6368-637712801-1281031259/1951
Southern Pacific (Texas & New Orleans)338-35312811-1282631269/1951
Rock Island120, 124, 121, 125, 122, 126, 123, 12712950-1295730725/1951
Charleston & Western Carolina900-90512979-12984617212/1950
Louisville & Nashville849-85613141-13148306011/1950
Western Maryland61-6213157-13158618611/1950
Erie807A, 807D13209-1321030743/1951
Western Maryland63-6613554-13557618612/1950
Pennsylvania9764A-9831A13578-1364530511/1951
Bessemer & Lake Erie708A-714A13678-1368430852/1951–3/1951
Santa Fe242, 242C–251, 251C13707-1372630781/1951–2/1951
Santa Fe259, 259C–268, 268C13727-1374630958/1951–9/1951
Santa Fe313-31614071-1407430996/1951
Nashville, Chattanooga & St. Louis826-83113861-1386630473/1951
Union Pacific1466, 1468, 1470, 1467, 146913982-1398662373/1951
Soo Line212A, 212B14001-1400230793/1951
Soo Line (Wisconsin Central)2226A, 2226B–2227A, 2227B14003-1400662453/1951
Southern4246-425314112-1411930774/1951
Southern4254-425914120-1412531104/1951
Southern4260-426914126-1413531096/1951
Northern Pacific6013A, 6013D–6018A, 6018D14252-1426330925/1951–6/1951
Louisville & Nashville844-849, 900-90314434-1444331086/1951
Texas & Pacific (Missouri Pacific)1558-158014518-1454031007/1951–8/1951
St. Louis Southwestern Railway (Cotton Belt)941-947 (odds)14673-1467630817/1951
Kansas City Southern (Louisiana & Arkansas)76A, 76D14730-1473163114/1951
Clinchfield806-81414788-14796630910/1951–12/1951
St. Louis Southwestern Railway (Cotton Belt)949-959 (odds)14817-14822631910/1951
Atlantic Coast Line392-41814859-1488531139/1951–11/1951
Wabash1177, 1177A–1182, 1182A15036-1504731151/1952
Union Pacific1471-148015087-15096309410/1951–11/1951
Erie712A, 712D15135-15136630812/1951
Milwaukee Road113A, 113C–118A, 118C15209-15220310611/1951
New York Central1711-178115322-1539230823/1952–6/1952
New York Central1782-184115393-15452309811/1951–3/1952
Northern Pacific6019A, 6019D–6020A, 6020D15672-15675313412/1951
Texas & Pacific (Missouri Pacific)1581-158215839-1584031011/1952
Atlantic Coast Line419-42315867-15871636312/1951
Baltimore & Ohio929-945, 929A-945A (odds)15905-1592231221/1952
Chesapeake & Ohio7032-708515969-1602230971/1952–5/1952
Great Northern311A, 311C–317A, 317C16071-1608431273/1952–4/1952
Great Northern280A-281A16092-1609331286/1952
Great Northern271A, 271B16096-1609731294/1952
New York Central1842-187316220-1625131249/1952–10/1952
Soo Line213A, 213B–214A, 214B16474-1647731377/1952
Denver & Rio Grande Western5701, 5704, 5711, 5714, 5721, 5724, 5731, 5734, 5741, 5744, 5751, 5754, 5761, 576416517-1653031496/1952 -7/1952
Southern Pacific6378-640516559-1658631077/1952–8/1952
Bessemer & Lake Erie715A-724A16587-1659631056/1952
Baltimore & Ohio947, 947A–961, 961A (odds)16642-1665731468/1952
Baltimore & Ohio963/963A–973/973A (odds), 97516658-1667031548/1952
Pennsylvania9872A-9879A16791-1679831449/1952
St. Louis Southwestern Railway (Cotton Belt)961-967 (odds)16812-1681563965/1952
Wabash1183, 1183A–1186, 1186A17068-1707531239/1952
Southern Pacific6406-642317172-17189315311/1952
Southern Pacific (Texas & New Orleans)354-36317208-17217315712/1952–1/1953
Chesapeake & Ohio7086-709317264-17271314710/1952–11/1952
Great Northern460A1727664528/1952
Santa Fe42-4417307-17309644710/1952
Santa Fe45-4717310-17312645410/1952
Santa Fe42C-44C17313-17315644710/1952
Santa Fe45C-47C17316-17318645410/1952
Electro-Motive (Demonstrators)459A, 459D (became Union Pacific Nos. 1481-1482 in 10/1952)17412-1741364599/1952
St. Louis Southwestern Railway (Cotton Belt)969-975 (odds)17424-1742764409/1952
Santa Fe306-30917434-17437646512/1952
Clinchfield815-82017480-17485311412/1952
Baltimore & Ohio977, 977A–993, 993A (odds)17512-1752964671/1953
Western Maryland231-24217539-17550306812/1952
Wabash1187, 1187A–1188, 1188A17576-1757931561/1953
Alaska Railroad1500-1504 (evens)17710-17712702112/1952
Great Northern462A, 464A17851-1785831511/1953
Great Northern466A, 468A17853-1785464981/1953–2/1953
Great Northern462D, 464D17855-1785631511/1953
Great Northern466D, 468D17857-1785864981/1953–2/1953
Bessemer & Lake Erie725A-728A17909-1791231582/1953
Spokane, Portland & Seattle803-80617915-1791861231/1953
Santa Fe310-31417933-1793764663/1953
Santa Fe336-34417948-1795665014/1953–5/1953
Southern Pacific6440-644518154-1815931662/1953
Milwaukee Road119A, 119C–121A, 121C18208-1821331314/1953
Southern Pacific (Texas & New Orleans)364-37518357-1836831675/1953–7/1953
Southern Pacific (Texas & New Orleans)376-38118369-1837431673/1953
Soo Line (Wisconsin Central)2228A, 2228B–2230A, 2230B18431-1843631398/1953
Santa Fe269, 269C–280, 280C18911-18934652311/1953–12/1953
Alaska Railroad1506, 150819045-19046316912/1953

F7A rebuilds

These nine cab units were rebuilt on later Electro-Motive orders. The serial is the original locomotive’s. They are outside the 2,366.

OwnerRoad numberSerialOrderCompletedRebuilt from
Atlantic Coast Line317240370053/1951FTA 317
Denver & Rio Grande Western5481190270063/1951FTA 548A
Kansas City Southern59D (2nd)12318800612/1951F7A 59D (1st)
Union Pacific1464633380103/1952F3A 1459
Union Pacific1465671880113/1952F3A 1553
Union Pacific1466 (2nd)1398280136/1952F7A 1466 (1st)
Great Northern350A467380166/1952F3A 350A
Great Northern360A435580167/1952F3A 228
Great Northern460D194580218/1952FTA 418D

F7B, La Grange

OwnerRoad numberSerialOrderCompleted
Delaware, Lackawanna & Western636B, 611B4971-4972E8527/1949
Nashville, Chattanooga & St. Louis912-9135800-5801E10744/1949
Denver & Rio Grande Western555 (2nd and 3rd units in A-B-B-A set)5868-5869E9562/1949
Denver & Rio Grande Western556 (2nd and 3rd units in A-B-B-A set)5870-5871E9562/1949
Denver & Rio Grande Western557 (2nd and 3rd units in A-B-B-A set)5872-5873E9562/1949
St. Louis-San Francisco Railway (Frisco)5118-51216050-6053E9703/1949
Rock Island100B-109B6114-6123E9725/1949
Rock Island675B-677B6142-6144E11983/1949
New York Central24206240E9865/1949
Milwaukee Road84B, 84C–85B, 85C6327-6330E9975/1949
New York Central24216381E9865/1949
Chicago & North Western4067B-4071B6608-6612E10133/1949
Southern4385-43946793-6802E10275/1949
Southern Pacific6140B, 6140C–6142B, 6142C7126-7131E10366/1949
Southern Pacific6143B, 6143C–6149B, 6149C7132-7145E13106/1949
New York Central2422-24297169-7176E10417/1949
Southern Pacific8140-81797254-7293E104412/1949–1/1950
Missouri-Kansas-Texas208B-211B7385-7388E10506/1949
Soo Line (Wisconsin Central)2201C-2203C7412-7414E10535/1949–6/1949
Delaware, Lackawanna & Western632B-635B7449-7452E10597/1949
Baltimore & Ohio180X, 180AX–184X, 184AX (evens)7568-7573E10798/1949–9/1949
Pennsylvania9547B-9555B (odds)7593-7597E10804/1949
Wabash1104B7615E10853/1949
Wabash1100B-1102B7616-7618E10858/1949
Wabash1103B7621E10858/1949
Wabash1105B-1107B7628-7630E10858/1949
Gulf, Mobile & OhioB65-B707637-7642E10899/1949
Santa Fe202A, 202B–211A, 211B7766-7785E10956/1949–9/1949
St. Louis-San Francisco Railway (Frisco)5122-51257826-7829E9703/1949–4/1949
Kansas City Southern70B-71B7877-7878E111610/1949
Kansas City Southern33B7879E111710/1949
Chicago Great Western109D-110D7905-7906E11216/1949
Chicago Great Western111D, 105D-108D7911-7915E112210/1949
Milwaukee Road87B-89B7951-7953E112610/1949–11/1949
Milwaukee Road74B-79B7954-7959E115812/1949–1/1950
Missouri Pacific587B-594B7988-7995E11289/1949–10/1949
New York Central24308151E113711/1949
Missouri Pacific (International-Great Northern)595B-596B8155-8156E11309/1949
Southern Pacific6150B, 6150C–6169B, 6169C8187-8226E13106/1949–8/1949
Pennsylvania9667B-9676B8237-8246E11443/1949–7/1949
Santa Fe212A, 212B–216A, 216B8291-8300E115211/1949
Santa Fe37A, 37B–41A, 41B8311-8320E12169/1949
Denver & Rio Grande Western558–564 (2nd and 3rd units in A-B-B-A set)8359-8372E11575/1949- 7/1949
Kansas, Oklahoma & Gulf755B-756B8408-8409E11594/1949
Texas & Pacific (Missouri Pacific)1500B-1503B8440-8443E11682/1949
Texas & Pacific (Missouri Pacific)1504B-1507B8444-8447E11686/1949
Texas & Pacific (Missouri Pacific)1508B-1511B8448-8451E116811/1949
Texas & Pacific (Missouri Pacific)1512B-1515B8460-8463E116911/1949
Great Northern444B, 444C, 446B, 446C8515-8518E118010/1949
Chicago & North Western4072B-4073B8584-8585E11887/1949
Chicago & North Western4074B-4078B8586-8590E118810/1949
Kansas City Southern (Louisiana & Arkansas)32B8601E11902/1949
Clinchfield8538707E11753/1949
Santa Fe300A, 300B–305A, 305B8718-8729E121210/1949
Northern Pacific6510B-6512B8740-8742E12149/1949
Baltimore & Ohio186X, 186AX–192X, 192AX (evens)8743-8750E10799/1949
St. Louis Southwestern Railway (Cotton Belt)926-932 (evens)8762-876530012/1950
Pennsylvania9640B-9647B8777-8784E12213/1950
Pennsylvania9656B, 9658B, 9660B8797-879930373/1950
Pennsylvania9652B, 9654B8804-880530382/1950
Santa Fe217A, 217B–226A, 226B8940-8959E123412/1949
Western Pacific913B, 913C–921B, 921C8980-899730061/1950
Western Pacific804B-805B9006-900760431/1950
Kansas City Southern (Louisiana & Arkansas)76B, 76C, 77B9167-916930132/1951
Southern Pacific8180-81959253-926830152/1950
Lehigh Valley561-567 (odds)9438-944160092/1950
Southern4395-44059506-9516E12715/1949–6/1949
Great Northern448B, 448C–456B, 456C (evens)9548-955730173/1950
Great Northern500B-504B9558-956230186/1950
Great Northern268B-270B9566-956830196/1950
Santa Fe227A, 227B–241A, 241B9617-964630203/1950–5/1950
Santa Fe306A, 306B–310A, 310B9647-965661145/1950
Southern4406-44099657-9660E12716/1949
New York Central2431-24359664-9668E113711/1949
Chicago, Burlington & Quincy167B-169B9702-970430585/1950
Reading266B-271B9820-982530245/1950
Pennsylvania9648B, 9650B9833-983430252/1950
Nashville, Chattanooga & St. Louis914-9179882-988530286/1950
Chicago & North Western4079B-4084B10025-10030E118810/1949
Erie Railroad711B, 711C10114-1011560061/1950
Richmond, Fredericksburg & Potomac1151-115810160-10167601211/1949
Richmond, Fredericksburg & Potomac1159-116010170-1017160162/1950
Milwaukee Road69B-73B10335-1033930357/1950
Milwaukee Road68B1034030537/1950
Milwaukee Road90B-95B10341-1034630507/1950
Milwaukee Road48B-50B10356-10358303612/1950
Milwaukee Road96B-97B10365-1036630731/1951
Southern Pacific8196-821110645-10660303910/1950–11/1950
Western Pacific922B, 922C–924B, 924C10809-1081430406/1951
Northern Pacific6513B108572/1950
Northern Pacific6007B, 6007C–6012B, 6012C10920-1093160532/1950
Electro-Motive (Demonstrators)7002-7003 (became Soo Line 2500B-2501B on order 6136)11013-11014606111/1949
Electro-Motive (Demonstrators)9052-9053 (became Soo Line 500B-501B on order 6136)11016-11017606211/1949
Great Northern364B-365B11077-11078304410/1950
Great Northern307B-309B11087-11089304510/1950
Western Maryland53B-59B (odds)11108-1111160713/1950
Louisville & Nashville900-90211278-1128030234/1950
Wabash1108B1129530096/1950
Colorado & Southern (Burlington)700B, 700C–702B, 702C11323-1132830498/1950
Fort Worth & Denver City (Burlington)750B, 750C–752B, 752C11335-1134061268/1950
Denver & Rio Grande Western5652-5653, 5662-5663, 5672-5673, 5682-5683, 5692-569311415-1142460936/1950
Southern (Cincinnati, New Orleans & Texas Pacific)6160-616311524-1152760984/1950
Texas & Pacific (Missouri Pacific)1516B-1517B11576-1157761037/1950
St. Louis Southwestern Railway (Cotton Belt)9341162730554/1950
Baltimore & Ohio231X-237X (odds)11709-1171230348/1950
Santa Fe311A, 311B–312A, 312B11789-1179261145/1950
Milwaukee Road109B-111B11806-11808303612/1950–1/1951
Bessemer & Lake Erie701B-707B11816-1182261186/1950
Chesapeake & Ohio7500-751511858-1187360009/1950
Southern Pacific8212-823911881-11908303911/1950–12/1950
Nashville, Chattanooga & St. Louis918-91911957-1195830286/1950
Baltimore & Ohio249X-263X (odds)12275-1228230649/1950–10/1950
Baltimore & Ohio153X-171X (odds)12283-1229230699/1950
Boston & Maine4265B-4266B12303-1230461387/1950
Gulf, Mobile & OhioB71-B7412310-1231361407/1950
Kansas City Southern59B, 59C, 72B/72C-75B/75C12324-1233361428/1950–9/1950
Southern (Cincinnati, New Orleans & Texas Pacific)6164-616812346-12350617811/1950
Southern (Alabama Great Southern)6756-675812357-12359614511/1950
Boston & Maine4267B-4268B12382-12383615011/1950
Lehigh Valley569, 57112487-1248830651/1951
Missouri Pacific629B-630B12525-1252630673/1951
Baltimore & Ohio265X-279X (odds)12674-12681616111/1950–12/1950
Baltimore & Ohio281X-297X (odds), 361X12682-1269162071/1951–2/1951
Baltimore & Ohio363X, 363AX, 365X, 365AX, 367X/367AX–374X/374AX12692-12711616112/1950–1/1951
Southern Pacific8240-826712773-1280030718/1951
Southern Pacific (Texas & New Orleans)538-54112827-1283031269/1951
St. Louis-San Francisco Railway (Frisco)5126-513112944-1294962906/1951
Rock Island120B-123B12958-1296130725/1951
Pennsylvania9832B-9858B (evens)13075-1308830664/1952–6/1952
Erie Railroad807B1321130743/1951
Texas & Pacific (Missouri Pacific)1518B-1523B13516-1352130633/1951–4/1951
Chicago Great Western112D-114D, 113B13543-13546620410/1950
Western Maryland63B13558618612/1950
Chicago Great Western114B-115B13653-13654620612/1950
Chicago Great Western116B, 116D13651-1365262221/1951
Pennsylvania9764B-9818B (evens)13646-1367330511/1951–4/1951
Bessemer & Lake Erie708B-714B13685-1369130852/1951
Santa Fe242A, 242B–251A, 251B13747-1376630781/1951–2/1951
Santa Fe259A, 259B–268A, 268B13767-1378630958/1951–9/1951
Santa Fe252A, 252B–258A, 258B13801-1381430845/1951
Union Pacific1466B, 1466C–1474B, 1474C (evens)13987-1399662373/1951
Soo Line502B-503B13999-1400030803/1951
Santa Fe313A, 313B–316A, 316B14075-1408230996/1951
Southern4410-441714146-1415330774/1951
Southern4418-442314154-1415931104/1951
Southern4424-442814160-1416431096/1951
Northern Pacific6013B, 6013C–6018B, 6018C14264-1427530925/1951–6/1951
Texas & Pacific (Missouri Pacific)1524B-1530B14541-1454731007/1951
Louisville & Nashville703-71214622-1463130489/1951
St. Louis Southwestern Railway (Cotton Belt)936, 93814677-1467830817/1951
Chicago Great Western115D, 116E, 116F, 116G14723-1472663045/1951
Kansas City Southern (Louisiana & Arkansas)77C, 78B, 78C, 79B14732-1473563114/1951
Clinchfield854-86014797-14803630910/1951–12/1951
Missouri-Kansas-Texas (Katy)121B-124B14813-1481663181/1952–2/1952
St. Louis Southwestern Railway (Cotton Belt)940-950 (evens)14823-14828631910/1951
Atlantic Coast Line392B-403B14886-1489731139/1951–10/1951
Union Pacific1476B, 1476C–1494B, 1494C15097-15116309410/1951–11/1951
Erie Railroad712B, 712C15137-15138630812/1951
Milwaukee Road113B-118B15221-15226310611/1951
Milwaukee Road98B-103B15239-15244311110/1951–12/1951
New York Central2436-244215453-15459309811/1951–12/1951
St. Louis-San Francisco Railway (Frisco)5132-513415629-1563163481/1952
Northern Pacific6019B/6019C–6020B/6020C, 605015676-15680313412/1951
Northern Pacific65501568331352/1952
Texas & Pacific (Missouri Pacific)1531B-1534B15841-1584431011/1952
Baltimore & Ohio929X-945X (odds)15923-1593131221/1952
Erie Railroad713C1593263552/1952
Chesapeake & Ohio7516-754216023-1604930971/1952–5/1952
Chesapeake & Ohio8500-850616064-1607030962/1952–4/1952
Great Northern311B-317B16085-1609131273/1952–4/1952
Great Northern280B-281B16094-1609531286/1952
Great Northern458C1609831294/1952
New York Central2443-247416252-1628331249/1952–10/1952
Soo Line (Wisconsin Central)2204C1647831527/1952
Southern (Cincinnati, New Orleans & Texas Pacific)6169-618216487-16500312110/1952–11/1952
Denver & Rio Grande Western5702-5703, 5712-5713, 5722-5723, 5732-5733, 5742-5743, 5752, 576216531-1654231496/1952–7/1952
Bessemer & Lake Erie715B-722B16598-1660531056/1952
Baltimore & Ohio947X-961X (odds)16671-1667831468/1952
Pennsylvania9872B-9878B (evens)16799-1680231449/1952
St. Louis Southwestern Railway (Cotton Belt)952-958 (evens)16816-1681963965/1952
Chicago & North Western4091B-4094B16820-1682331127/1952
Milwaukee Road104B-105B16948-1694931309/1952
Southern Pacific8268-828517190-17207315311/1952
Southern Pacific (Texas & New Orleans)546-547, 542-54517218-17223315712/1952–1/1953
Union Pacific910B, 910C17233-1723464444/1952
Chesapeake & Ohio7543-754617272-17275314710/1952–11/1952
Great Northern460B1727764528/1952
Santa Fe42A-44A17319-17321644710/1952
Santa Fe45A-47A17322-17324645410/1952
Santa Fe42B-44B17325-17327644710/1952
Santa Fe45B-47B17328-17330645410/1952
Electro-Motive (Demonstrators)459B, 459C (became Union Pacific Nos. 1496B and 1496C)17414-17415645910/1952
Southern (Cincinnati, New Orleans & Texas Pacific)618317429312111/1952
Santa Fe306A-307A17438-17439646512/1952
Santa Fe308A-309A, 306B-309B17442-17447646512/1952
Clinchfield861-86317486-17488311412/1952
Baltimore & Ohio977X-993X (odds)17530-1753864671/1953
Western Maryland231B-237B (odds)17551-17554306812/1952
Alaska Railroad1501-1505 (odds)17713-17715702112/1952
Louisville & Nashville713-71617837-1784031181/1953
Great Northern462B, 464B17859-1786031511/1953
Great Northern466B, 468B17861-1786264981/1953–2/1953
Great Northern462C, 464C17863-1786431511/1953
Great Northern466C, 468C17859-1786664981/1953–2/1953
Bessemer & Lake Erie723B-724B17913-1791431582/1953
Bessemer & Lake Erie725B-726B17919-1792031582/1953
Santa Fe310A, 310B–314A, 314B17938-1794764663/1953
Santa Fe336A/336B-340A/340B, 341A, 343A, 342A, 344A17957-1797065014/1953–5/1953
Southern Pacific8296-830318146-1815331602/1953–3/1953
Southern Pacific8290, 8292, 8294, 8291, 8293, 829518160-1816531662/1953
Milwaukee Road119B-121B18214-1821631314/1953
Southern Pacific (Texas & New Orleans)548-55318375-1838031675/1953–7/1953
St. Louis-San Francisco Railway (Frisco)5135-513918425-1842931416/1953
Santa Fe269A, 269B–280A, 280B18935-18958652311/1953–12/1953
Western Maryland61B, 65B, 239B-243B (odds)19026-19030317712/1953
Alaska Railroad150719047317312/1953

F7B rebuilds

Eleven boosters, rebuilt the same way. The Great Northern row for 460C started as an FT booster. Santa Fe 48A started as an F3 booster.

OwnerRoad numberSerialOrderCompletedRebuilt from
Kansas City Southern78C (2nd)14734800412/1951F7B 78C (1st)
Chicago Great Western104B413280071/1952F3B 104B
Union Pacific1464B465780083/1952F3B 1456B
Union Pacific1464C674080103/1952F3B 1558C
Union Pacific1466B (2nd)1398780146/1952F7B 1466B (1st)
Union Pacific1466C (2nd)1398880156/1952F7B 1466C (1st)
Great Northern350B469180176/1952F3B 350B
Santa Fe48A6631E10147/1952F3B 32A
Great Northern360B955980197/1952F7B 501B
Great Northern460C195980208/1952FTB 418C
New York Central2446 (2nd)16255802911/1953F7B 2446 (1st)

F7A, General Motors Diesel, London

OwnerRoad numberSerialOrderCompleted
Wabash1155, 1155A–1164, 1164AA125-A144C10512/1950–3/1951
Canadian National9028-9054 (evens)A203-A229 (odds)C1144/1951–8/1951
Canadian National9094, 9096A282-A283C1458/1952
Canadian National9056-9062 (evens)A326-A332 (evens)C13712/1951
Canadian National9064-9092 (evens)A352-A366C1457/1952–9/1952
Canadian National9098-9142 (evens)A385-A407C1456/1952–11/1952
Wabash1189, 1189AA487-A488C1573/1953

F7B, General Motors Diesel, London

OwnerRoad numberSerialOrderCompleted
Canadian National9029-9055 (odds)A204-A230 (evens)C1144/1951–8/1951
Canadian Pacific4434-4437A246-A249C1169/1951–10/1951
Canadian Pacific4424-4433A250-A259C11710/1951–11/1951
Canadian Pacific4438-4447A312-A321C1331/1952–4/1952
Canadian Pacific4448A322C1345/1952
Canadian National9057-9063 (odds)A327-A333 (odds)C13712/1951–1/1952
Canadian Pacific4459-4462A495-A498C1591/1953–3/1953

F7A exports

OwnerRoad numberSerialOrderCompleted
Secretaría de Comunicaciones y Obras Públicas (Mexico)23037-230389886-9887E12969/1949
Ferrocarriles Nacionales de México6310-631810879-10887605111/1949, 1/1950
Ferrocarriles Nacionales de México6319A-6327A15140-15148633412/1951
Ferrocarriles Nacionales de México6335-633815638-15641633412/1951

F7B exports

OwnerRoad numberSerialOrderCompleted
Ferrocarriles Nacionales de México6319B-6327B15149-15157633412/1951
Ferrocarriles Nacionales de México6328B-6334B15165-15171633511/1951

Sources

  • Electro-Motive Division. Diesel Locomotive Operating Manual No. 1310, Model F7. 4th ed. La Grange, Ill.: General Motors Corporation, March 1950. Gear ratios and maximum speeds, full-throttle minimum speeds, weights, fuel, lube oil, cooling water, sand, and steam-generator water tanks.
  • Electro-Motive F7 short-time rating table. Continuous tractive effort for each of the eight gear ratios, at 9, 11, 12, 13.5, 15, 15.5, 17, and 18 mph.
  • Electro-Motive Division. E8 operating manual, steam-generator section. Hourly ratings of the Vapor-Clarkson OK-4625 (2,750 pounds) and OK-4616 (1,700 pounds), the same models offered on the F7.
  • Don Strack, “Union Pacific EMD F Units,” UtahRails. The August 1952 demonstrator set 459A–459D, the August 22, 1952, sale to Union Pacific, the October 1952 delivery as 1481, 1496B, 1496C, and 1482, the F3-style and F7-style dynamic-brake hatches, and the base prices of $161,000 and $147,500. The prices first appeared in his article in Diesel Era, Vol. 2, No. 6 (November/December 1991).
  • Andre Kristopans, EMD F7A, F7B, and FP7 order list, TrainWeb. Order E956, February 1949: cab serials 5862–5867 cover Rio Grande sets 555, 556, and 557, and booster serials 5868–5873 are the matching B units. Order and serial columns in the roster follow that list where a batch was added, and otherwise the compilation already on this page.
  • Louis A. Marre. Diesel Locomotives: The First 50 Years, A Guide to Diesels Built Before 1972. Milwaukee: Kalmbach Publishing Company, 1995. The 2,366 cab units and 1,483 boosters.
  • Jerry A. Pinkepank. Diesel Spotter’s Guide. Milwaukee: Kalmbach Publishing Company, 1967.
  • Bob Hayden, ed. Diesel Locomotives: Cyclopedia, Volume 2. Milwaukee: Kalmbach Publishing Company, 1980.
  • Gerald Foster. A Field Guide to Trains. New York: Houghton Mifflin, 1996.
  • Brian Solomon. EMD Locomotives. Minneapolis: MBI Publishing Company, 2006.
  • Brian Solomon. Electro-Motive E-Units and F-Units. Minneapolis: Voyageur Press, 2011.

Related pages: Rio Grande · Southern Pacific · Burlington · Great Northern · New York Central · Wabash · SD40-2 · Diesel locomotives

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    Nov 06, 26 10:35 PM

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    EMD SD35, 2,500 horsepower, 16-cylinder 567D3A, built June 1964 through January 1966. 360 locomotives. Specifications and the production roster by owner, serial, and order.

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  2. EMD "SDP35" Locomotives: Data Sheet, Specs, Roster

    Nov 06, 26 10:32 PM

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    EMD SDP35, the steam-generator SD35. 35 locomotives, July 1964 through September 1965. Seaboard Air Line 1100-1119, Atlantic Coast Line 550, Louisville and Nashville 1700-1703, Union Pacific 1400-1409…

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  3. RJ Corman Will Be Replaced on Part of the Luzerne Lines

    Nov 06, 26 01:34 PM

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    A November 6, 2026 notice says Wilkes-Barre Terminal Railway would acquire about 59.65 miles in Luzerne County and replace R.J. Corman as operator on part of the line. The earliest date is November 22…

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  4. NS Names a Student Hub at the University of Georgia

    Nov 06, 26 12:03 PM

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    Norfolk Southern said a 100,000 dollar gift named a student-organization hub in Driftmier Engineering Center. The University of Georgia marked the naming on October 26. The space is for 23 clubs.

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  5. Union Pacific Filed Its Vena Recording Certification

    Nov 06, 26 11:56 AM

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    Union Pacific filed a November 5, 2026 verified statement that the confidential label is off the March 17 Vena recording and that parties of record received a copy at 3:30 p.m. Eastern.

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  6. OmniTRAX Adds Tenants at Its Blue Island Hub

    Nov 06, 26 10:26 AM

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    OmniTRAX has signed new construction-company leases at its 90-acre Blue Island, Illinois, hub and is planning a second phase.

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  7. Veterans and Active-Duty Members Exceed 16 Percent of Norfolk Southern

    Nov 06, 26 10:14 AM

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    Norfolk Southern said on November 5, 2026, that more than 3,000 veterans and active-duty service members are more than 16 percent of its workforce. This year grants are $100,000 and $50,000.

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  8. BNSF: Merger Would Put Half of U.S. Rail Shipments Under One Railroad

    Nov 06, 26 10:00 AM

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    BNSF chief marketing officer Tom G. Williams told customers on November 3, 2026, that a Union Pacific-Norfolk Southern merger would put about half of U.S. rail shipments under one railroad. Nothing is…

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  9. Amtrak Opens a Winter Fare Sale

    Nov 06, 26 09:28 AM

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    Amtrak opened a Winter Wanderlust sale on November 5, 2026. Book by November 12 for travel from December 1, 2026, through March 14, 2027. Blackout dates apply. Coach and Acela Business only.

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  10. CN and CPKC Report October Grain Records

    Nov 06, 26 08:50 AM

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    CPKC reported October 2026 grain records in Canada and the United States. CN reported 3.54 million metric tonnes across Canada. The releases do not print a combined total.

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  11. New Brunswick Transload Gets CN Rail Service

    Nov 06, 26 08:49 AM

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    CN said on November 4, 2026, that it has started serving AD Gagnon Transload Services near Grand Falls, New Brunswick. The site is three kilometres from the Trans-Canada Highway and lists room for 106…

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  12. Together, Freight and Passenger Rail Can Grow, Union Pacific Says

    Nov 06, 26 08:47 AM

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    Union Pacific said on November 5, 2026, that passenger obligations would remain if it combines with Norfolk Southern. The capacity claim is a Union Pacific analysis, not a Surface Transportation Board…

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  13. FM "C-Liner" Locomotives: Specs, Roster, Photos

    Nov 05, 26 11:19 PM

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    Fairbanks-Morse Consolidation Line cab units, the C-Liners. 165 locomotives, Beloit and Kingston, March 1950 through February 1955. Models, specs, and production rosters.

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  14. Atlanta, Birmingham & Coast Railroad: Map, History, Roster

    Nov 05, 26 12:03 PM

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    Atlanta, Birmingham & Coast, from Brunswick and Waycross to Atlanta and Birmingham. Atlantic Coast Line control at the close of 1926. Merged in January 1946 as the Western Division. Steam roster of th…

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  15. El Paso & Southwestern Railroad: Map, History, Logo

    Nov 05, 26 12:00 PM

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    The El Paso & Southwestern, the Phelps Dodge copper railroad from Tucson to the Rock Island at Tucumcari. Southern Pacific control on October 31, 1924.

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  16. Brightline Says Orlando Service Has Resumed

    Nov 05, 26 11:55 AM

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    Brightline said on November 5, 2026, that trains to and from Orlando have resumed after weather suspensions in Brevard County. Later that morning the departures page still showed the Orlando segment s…

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  17. Metra Customers Must Sign Up Again

    Nov 05, 26 11:43 AM

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    Metra says customers who want service alerts must sign up again at metratracker.com. The November 2 story says the new system has launched and the old email list is shut down. A notice on the same pag…

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  18. Norfolk Southern Packs Six Projects Into One Window

    Nov 05, 26 11:38 AM

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    Norfolk Southern used one 26-hour window on the W Line for six projects in Indiana and Kentucky, including three bridge replacements. The October 27 account does not give the calendar day of the work.

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  19. CSX: More Time to Comment on an Inspection Waiver

    Nov 05, 26 11:29 AM

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    The Federal Railroad Administration extended comments on a CSX petition for relief from some qualified mechanical inspector rules until December 2, 2026. The November 2 notice does not grant the waive…

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  20. Brightline Expects Orlando Service on Thursday

    Nov 05, 26 09:21 AM

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    Brightline said on November 4, 2026, that it expects trains to and from Orlando to resume on Thursday, November 5. South Florida stations kept running. The departures page still showed the Orlando seg…

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  21. Union Pacific: More Time to Comment on an Inspection Waiver

    Nov 05, 26 09:15 AM

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    The Federal Railroad Administration extended comments on a Union Pacific petition for relief from some qualified mechanical inspector rules until December 2, 2026. The November 2 notice does not grant…

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  22. Wisconsin Opens Comments on the 2027 Freight Plan

    Nov 05, 26 09:03 AM

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    WisDOT opened the draft 2027 State Freight Plan for comment through December 1, 2026. The plan covers freight rail with highways, harbors, aviation, and intermodal links. Completion is expected in sum…

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  23. U.S. Rail Traffic Rose 3.5 Percent in the Week Ending October 31

    Nov 05, 26 08:52 AM

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    U.S. railroads moved 514,080 carloads and intermodal units in the week ending October 31, 2026, up 3.5 percent from a year earlier, the Association of American Railroads said on November 4.

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  24. Muni and Bay Area Transit Measures Pass

    Nov 05, 26 08:49 AM

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    San Francisco Municipal Transportation Agency said on November 4, 2026 that Proposition H and a regional transit measure passed. Proposition H is about 160 million dollars a year for Muni. The regiona…

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  25. Ground Rules Set for Responsive Applications

    Nov 05, 26 08:47 AM

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    Decision No. 46, served November 4, 2026, denies a request to add Walsenburg to the Union Pacific interchange list and sets what CPKC and CN must include in responsive applications. Four CPKC proposal…

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  26. Video of the Vena Address Must Be Released

    Nov 05, 26 08:42 AM

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    The Surface Transportation Board on November 4, 2026 denied the Union Pacific appeal and ordered the March 17 shipper-conference recording released to the parties by 5:00 p.m. Eastern on November 5. C…

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  27. Chicago & North Western Iron Ore C628s

    Nov 04, 26 11:47 PM

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    Chicago and North Western C628s 6701-6730, the ex-Norfolk and Western high-hoods, in Upper Peninsula iron-ore service from the mid-1970s until December 21, 1986, and what happened to each unit.

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  28. Warrenton Railroad: Serving Warrenton, NC (1884-1985)

    Nov 04, 26 10:33 PM

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    The three-mile Warrenton Railroad, from Warren Plains to the North Carolina county seat. Chartered January 28, 1871. First train November 8, 1884. Closed in 1985.

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  29. Rio Grande Steam Locomotives (Since 1900)

    Nov 04, 26 11:40 AM

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    Denver & Rio Grande Western steam locomotives built since 1900. Standard gauge quantity 435 and narrow gauge 48. Challengers, 2-8-8-2s, Mountains, Northerns, and the K-27, K-28, K-36, and K-37.

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  30. Rio Grande Diesel Locomotives (All-Time)

    Nov 04, 26 11:39 AM

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    Denver & Rio Grande Western diesel locomotives, each frame once. 554 units, from the 1941 NW2 through the 1990 GP60s. FT, F3, F7, and F9 sets are not counted again under their 1950 numbers.

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  31. Rio Grande Railroad: Map, Logo, History, Rosters

    Nov 04, 26 11:34 AM

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    Denver & Rio Grande Western history, from William Jackson Palmer and the October 27, 1870 charter through the Royal Gorge, the Moffat route, the California Zephyr, and Union Pacific common control…

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  32. Lindblom Gift Expands the Fort Wayne Restoration Shop

    Nov 04, 26 11:14 AM

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    Art Lindblom gave the Fort Wayne Railroad Historical Society more than $1.4 million, its largest single gift, to expand the New Haven shop. The addition is planned for late 2026 and early 2027. A sepa…

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  33. Design Contract Awarded for the Forest Park Branch

    Nov 04, 26 11:09 AM

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    The Chicago Transit Board approved a design contract for about 13 miles of Blue Line track from the Illinois Medical District to the I-290 Bridge. The release summary calls it a $17 million contract…

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  34. Kanawha River Railroad: The Norfolk Southern Lease Is Renewed

    Nov 04, 26 10:51 AM

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    Kanawha River Railroad filed to keep leasing 309.45 miles from Norfolk Southern in West Virginia and Ohio. The second amendment is dated August 17, 2026. The Board has not set the date the exemption t…

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  35. Short Line Center Awarded a $5.625 Million Grant

    Nov 04, 26 10:35 AM

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    The American Short Line and Regional Railroad Association received a $5.625 million CRISI grant on October 20, 2026, for the Short Line Training Center. A 25 percent match brings the project to $7.5 m…

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  36. Palestine and Rusk Track Rebuild Finishes Its First Phase

    Nov 04, 26 09:13 AM

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    The Texas & Eastern Railroad has finished the first phase of a roughly $30 million track project between Palestine and Rusk. Phase I used a $13.4 million CRISI grant. Phase II, at $8.54 million, adds…

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  37. Manhattan, Brooklyn, Queens, and the Bronx Get Subway Power Design

    Nov 04, 26 09:12 AM

    STV said on November 2, 2026, that MTA Construction and Development selected the firm to manage design of 10 subway substations and 12 circuit breaker houses in four New York boroughs. No contract pri…

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  38. Chicago's Regional Transit Budget Goes Out for Comment

    Nov 04, 26 09:07 AM

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    The Northern Illinois Transit Authority opened its first regional budget for comment through December 4, 2026. The proposal is $5.04 billion for 2027 operations and $9.73 billion in capital work throu…

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  39. VIA Rail Finishes the Toronto Maintenance Centre

    Nov 04, 26 09:05 AM

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    VIA Rail completed a four-year modernization of its Toronto Maintenance Centre on November 2, 2026. The Government of Canada invested $310 million. The shop supports 32 Corridor trainsets and will sus…

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  40. Brightline Suspends Orlando Service for High Water

    Nov 04, 26 09:02 AM

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    Brightline suspended trains between Orlando and West Palm Beach on November 2, 2026, because of high water in Brevard County. A later post the same day kept the suspension until 2:00 p.m. on November…

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  41. Hiawatha West Draws Federal Funding Toward Madison

    Nov 04, 26 08:58 AM

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    Amtrak welcomed a CRISI selection for Hiawatha West, extending Chicago-Milwaukee service toward Madison, Watertown, and Pewaukee. Wisconsin said on October 16 that the award is over $218 million.

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  42. Seattle's Train Maintenance Facility Opens for Airo Trains

    Nov 04, 26 08:56 AM

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    Amtrak cut the ribbon October 23, 2026, on a $250 million Seattle shop for Airo trains on the Cascades route. The building came in on time and $50 million under budget and opens in phases through the…

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  43. Aberdeen Carolina and Western Wins a $19.9 Million Grant

    Nov 04, 26 08:46 AM

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    The Aberdeen Carolina and Western Railway won a $19.9 million CRISI grant for about 30 miles of welded rail in Montgomery and Stanly counties. The railroad and NCDOT are putting up a 52 percent match…

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  44. Alco "C628" Locomotives: Roster, Data Sheet, Specs

    Nov 03, 26 07:57 PM

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    Alco Century C628: 2,750 hp C-C road switcher, 186 built from December 1963 to December 1968. Production roster, specs, and where the high-hood Norfolk and Western units went.

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  45. Santa Fe Railroad (AT&SF): Diesel Roster (All-Time)

    Nov 03, 26 12:54 PM

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    Santa Fe diesel locomotives, each new frame once, with construction numbers and order numbers. The counted total is 3,964, from the 1935 boxcabs through the SD75Ms.

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  46. Metra Holiday Trains Return on Six Lines

    Nov 03, 26 11:40 AM

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    Metra holiday trains will run on six lines in December, with tickets on sale at noon November 16 for $10. The Chicago Transit Authority and Pace are fielding holiday buses in the same regional announc…

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  47. Amtrak Encourages Early Booking for Thanksgiving

    Nov 03, 26 11:39 AM

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    Amtrak is asking travelers to book Thanksgiving trips early. The railroad carried more than 1.2 million customer trips over the 2025 holiday and expects another record, with extra Northeast Regional s…

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  48. Channel Pacific Keeps Its West Sacramento Exemption

    Nov 03, 26 11:26 AM

    The Surface Transportation Board denied a West Sacramento challenge to Channel Pacific Railroad’s exemption to operate about 2,132 feet of terminal track. The exemption took effect in June 2026.

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  49. DART Marks One Year of the Silver Line

    Nov 03, 26 11:22 AM

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    DART marked one year of Silver Line service linking seven North Texas cities and DFW Airport. The 26-mile regional rail line opened October 25, 2025, as the agency’s first rail expansion in a decade.

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  50. Massachusetts Breaks Ground for the Berkshire Flyer

    Nov 03, 26 10:07 AM

    Massachusetts broke ground October 29 in Pittsfield on track work meant to support permanent seasonal Berkshire Flyer service. MassDOT has $31 million for the project in its 2027-2031 capital plan.

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